30 minute countdown timer with spreadsheet

I need a basic 30 minute countdown timer which captures time remaining and allows a team name to be entered associated with that time. Team name and time remaining need to be entered into a sortable spreadsheet which should allow up to 50 teams to be entered

7 freelancers are bidding on average $158 for this job

Hello Sir,
I am Software Engineer. I am expert in Android, IOS, PHP, wordpress, Databases and have designed many such projects.
As you can see in my profile that I am new here but willing to work really hard to More